Bochum 2009 – wissenschaftliches Programm

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HK: Fachverband Hadronen und Kerne

HK 62: Accelerators and Instrumentation I

HK 62.3: Vortrag

Mittwoch, 18. März 2009, 17:30–17:45, H-ZO 80

A Sampling ADC readout for the Crystal Barrel calorimeter at ELSA — •Steffen Schaepe — Helmholtz - Institut für Strahlen- und Kernphysik, Nußallee 14-16, 53115 Bonn, Germany

The CBELSA/TAPS experiment is a photoproduction experiment specialized for hadron spectroscopy investigating reactions with multi photon final states. Its central component is the Crystal Barrel calorimeter with a nearly 4π coverage. With its 1320 CsI(Tl) crystals it offers excellent detection capabilities and good energy resolution. Due to the scintillating characteristics of CsI(Tl) and electronic hardware designed for best energy resolution it does not offer any timing or fast triggering capabilities for most of the 4π solid angle yet.

In an upgrade scheduled for the near future it is planned to add these features to the experiment. Therefore sensors and/or readout of the crystals are to be exchanged. It is studied how the use of fast sampling ADCs with feature extraction could improve the readout in terms of timing and pulse shape analysis without degrading the current performance in energy resolution, either with existing signal processing electronics or with new hardware.

This work is supported by DFG (SFB/TR16).